#ifndef RASTACLAUS_CH_14_EX_9_CHECKERS_H
#define RASTACLAUS_CH_14_EX_9_CHECKERS_H
namespace Graph_lib{

    struct Filled_Circle;

    enum BW_Colors{black, white};

    struct Checker:Filled_Circle{
        Checker(Point xy, int r, BV_Color c);
        void draw_lines() const;
    };
}
#endif //RASTACLAUS_CH_14_EX_9_CHECKERS_H
